research
Post-doctoral fellowship position at Polytechnique Montréal on phase field modelling
Polytechnique Montréal is looking for a post-doctoral fellow having a very strong training in continuum mechanics/numerical methods to work on the phase field modelling of damage in materials. This one-year project will consist in deploying and applying an existing phase field code at two industrial partners: one in optics and the other in aerospace.
Please send your CVs at my address: martin.levesque(at)polymtl.ca
Entropy Special Issue
Deadline for manuscript submissions: 30 November 2019.
Special Issue "Entropy Based Fatigue, Fracture, Failure Prediction and Structural Health Monitoring"
https://www.mdpi.com/journal/entropy/special_issues/fatigue
Electro-mechanical behaviour or rough surfaces
Understanding electrical contact resistance
Electrical contact resistance at interfaces between pairs of rough surfaces is of great importance in the performance of diverse systems, particularly in miniaturised electromechanical systems containing switches.
In this study, the role of pressure and surface structure is explored with a view towards gaining a beter understanding of electrical contact resistance.
Scholarships for Postgraduate Research Students to study at Swinburne University of Technology in Australia
There are several PhD scholarships at School of Engineering, Swinburne University of Technology, Australia. The scholarship includes the annual stipend AU$27,596 for three years (with possible 6 months extension). The focus of the research will be on topology optimization of structures, materials, and metamaterials.
To be successful in this role you will need to demonstrate the following:
1) A Bachelor degree honours and/or a research master’s degree in mechanical engineering, civil engineering, applied mathematics, or a related field;
How to import edited node coordinates (mesh) to Abaqus?
Forums
Choose a channel featured in the header of iMechanica
Free Tags
import modified nodes coordinates to abaqus
Friction-induced energy losses in mechanical contacts subject to random vibrations
In this paper, we apply the previously developed Method of Memory Diagrams (MMD) to the description of an axisymmetric mechanical contact with friction subject to random vibrations. The MMD belongs to a family of semi-analytical methods of contact mechanics originating from the classical Cattaneo-Mindlin solution; it allows one to efficiently compute mechanical and energetic responses to complex excitation signals such as random or acoustic ones.
A nonlinear data-driven reduced order model for computational homogenization with physics/pattern-guided sampling
Developing an accurate nonlinear reduced order model from simulation data has been an outstanding research topic for many years. For many physical systems, data collection is very expensive and the optimal data distribution is not known in advance. Thus, maximizing the information gain remains a grand challenge. In a recent paper, Bhattacharjee and Matous (2016) proposed a manifold-based nonlinear reduced order model for multiscale problems in mechanics of materials. Expanding this work here, we develop a novel sampling strategy based on the physics/pattern-guided data distribution.
Universal Displacements in Linear Elasticity
In nonlinear elasticity, universal deformations are the deformations that exist for arbitrary strain-energy density functions and suitable tractions at the boundaries. Here, we discuss the equivalent problem for linear elasticity. We characterize the universal displacements of linear elasticity: those displacement fields that can be maintained by applying boundary tractions in the absence of body forces for any linear elastic solid in a given anisotropy class.